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Finding the Fourth Proportional to 659,368.80, 909,929.44 and 357,562.72

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Solution

The fourth proportional to 659,368.80, 909,929.44 and 357,562.72 is: 493,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,368.80 : 909,929.44 = 357,562.72 : x
  2. Step 2: Convert to fraction form
    659,368.80/909,929.44 = 357,562.72/x
  3. Step 3: Cross multiply
    659,368.80x = 909,929.44 × 357,562.72
  4. Step 4: Simplify right side
    659,368.80x = 325,356,845,574.48
  5. Step 5: Solve for x
    x = 325,356,845,574.48/659,368.80
  6. Step 6: Final answer
    x = 493,436.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.